Demonstration of a 150-kW-peak-power, 2-GHz-linewidth, 1.9-mu m fiber gas Raman source

Wang Zefeng; Gu Bo; Chen Yubin; Li Zhixian; Xi Xiaoming

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Demonstration of a 150-kW-peak-power, 2-GHz-linewidth, 1.9-mu m fiber gas Raman source

机译：演示150千瓦峰值，2-GHz-LINEWIDTH，1.9-MU M光纤拉曼源

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We report here for the first time, to the best of our knowledge, a 100-kW-peak-power, GHz-linewidth, sub-nanosecond, 1.9-mu m laser source by gas stimulated Raman scattering (SRS) in hollow-core fiber. A H-2-filled, anti-resonance, hollow-core fiber is pumped with a sub-nanosecond, high-peak-power, 1064-nm microchip laser, generating a 1908-nm Stokes wave by vibrational SRS of H-2 molecules. A maximum peak power of about 150 kW (average power 55 mW, pulse energy 55 mu J) is achieved with a 1.4-m fiber length and only 3 bar H2 pressure. The maximum quantum efficiency is about 54%, and the corresponding slope efficiency is about 37%. The linewidth of the Stokes wave is about 2 GHz, which decreases about 1-2 orders compared with the rare-earth-doped fiber lasers of the same peak-power level. Operation close to atmospheric pressure makes it more convenient in future applications. If a tunable pump laser is used, a high-peak-power, narrow-linewidth, broadly tunable, 2-mu m fiber laser source can be easily achieved. (C) 2017 Optical Society of America

机译：我们首次报告，据我们所知，100千瓦峰值功率，GHz-LineWidth，亚纳秒，1.9-MU M激光源通过气体刺激拉曼散射（SRS）纤维。填充H-2填充的防振，空心纤维用亚纳秒，高峰功率，1064-nm微芯片激光泵送，通过H-2分子的振动SR产生1908纳米的斯托克波波。最大峰值功率约为150 kW（平均功率55mW，脉冲能量55μJ），通过1.4米的纤维长度和仅3巴H2压力实现。最大量子效率约为54％，相应的斜率效率约为37％。斯托克斯波的线宽约为2 GHz，与相同峰值功率水平的稀土掺杂光纤激光器相比减少了约1-2的订单。靠近大气压的操作使其在未来的应用中更方便。如果使用可调谐泵激光，则可以容易地实现高峰功率，窄线宽，宽度可调，2μM光纤激光源。（c）2017年光学学会

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《Applied optics》 |2017年第27期|共5页
作者
Wang Zefeng; Gu Bo; Chen Yubin; Li Zhixian; Xi Xiaoming;
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Natl Univ Def Technol Coll Optoelect Sci &

Engn Changsha 410073 Hunan Peoples R China;

Natl Univ Def Technol Coll Optoelect Sci &

Engn Changsha 410073 Hunan Peoples R China;

Natl Univ Def Technol Coll Optoelect Sci &

Engn Changsha 410073 Hunan Peoples R China;

Natl Univ Def Technol Coll Optoelect Sci &

Engn Changsha 410073 Hunan Peoples R China;

Natl Univ Def Technol Coll Optoelect Sci &

Engn Changsha 410073 Hunan Peoples R China;

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Demonstration of a 150-kW-peak-power, 2-GHz-linewidth, 1.9-mu m fiber gas Raman source

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